Historic buildings 190 History 52 Conservation and restoration 26 Buildings, structures, etc 25 Architecture 20 Description and travel 16 Historic sites 13 more ... Historic houses, etc 6 Homes and haunts 6 Social life and customs 5 Architects 4 Buildings 4 Church buildings 4 Architecture, Domestic 3 National parks and reserves 3 Pictorial works 3 City halls 2 Directories 2 Engineers, American 2 Environmental impact analysis 2 Guidebooks 2 Histoire 2 Historic buildings, etc 2 Lieux historiques 2 Municipal buildings 2 Neighborhoods 2 Parks 2 Revolution, 1775-1783 2 Suburbs 2 Travel 2 Walking 2 338 Spruce Street (Philadelphia, Pa.) 1 Academies and Institutes 1 Américains d'origine française 1 Apartment houses 1 Archaeology 1 Architecture (Philadelphia) 1 Architecture, Colonial 1 Arsenals 1 Bank buildings 1 less ...